A 0.5-m3 rigid tank contains refrigerant-134a initially at 200 kPa and 40 percent quality. Heat is transferred now to the refrigerant from a source at 358C until the pressure rises to 400 kPa. Determine (a) the entropy change of the refrigerant, (b) the entropy change of the heat source, and (c) the total entropy change for this process.

Q: A piston-cylinder device contains a saturated water. During a constant- pressure process, 538 kJ of…

A: Given dataHeat transferred to the surroundings Q = 538kJTemperature of the surrounding T = 230 =…

Q: 1.5-lbm of water at 350 psia fill a weighted piston-cylinder device whose volume is 1 ft3. The water…

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Q: A piston-cylinder device contains 0.66 kg of nitrogen gas at 140 kPa and 37°C. The gas is now…

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Q: A 4-kg steel rod 873°C (specific heat= 0.85kJ/kg-K) is annealed in a cylindrical tank 3B0 kg of…

A: For steel rod, m1=4 kgT1=873oC=1146 Kc1=0.85 kJ/kg.K For water, m2=380 kgT2=20oC=293 Kc2=4.187…

Q: 1. Steam enters an adiabatic nozzle at 3 MPa and 450°C with a velocity of 50 m/s and exits at 0.6…

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Q: A process innovated by Engr. Santioque is considered to be in a constant pressure. If there is ten…

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Q: Air enters the evaporator section of a window air conditioner at 100 kPa and 27C with a volume flow…

A: The thermodynamic properties of R134a at 120 kPa are, The enthalpy and entropy of the refrigerant…

Q: Air is compressed steadily in a compressor from 100 kPa and 400 K to 1 MPa and 500 K, at a rate of…

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Q: Determine (a) the entropy change of the refrigerant, (b) the entropy change of the cooled space

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Q: Beal eyeks A 0.8-m insulated rigid tank contains 2 kg of carbon dioxide at 90 kPa. Now paddle- wheel…

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Q: Consider a well-insulated piston cylinder device and it contains 3 L of saturated liquid refrigerant…

A: Data given in this problem :⇒Volume of liquid (V)= 3 litre = 3×10-3 m3 ⇒ Density of R 134-a =ρ=…

Q: R-134a at 320 kPa and 40 C undergoes an isobaric process in a closed system until its quality is 45…

A: The change in internal energy, heat transfer, work done, and the entropy generated. Given: The…

Q: A 100-lbm block of a solid material whose specific heat is 0.5 Btu/lbm·R is at 80F. It is heated…

A: Given data: *The mass of the block is mb=100 lbm. *The specific heat capacity of block is cb=0.5…

Q: Consider an isothermal expansion of 2 lb/sec of air from 100 psia and 90°F to 15 psia. If the…

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Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: Given data is

Q: que iswer is submited, you will be unable to return to this part. Air is compressed in a…

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Q: An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the…

A: Given   Saturated liquid temperature Tsat=343 K Leaving Temperature Tl =253 K  Mass flow rate, m =…

Q: Refrigerant-134a is expanded adiabatically from 100 psia and 100°F to a pressure of 10 psia.…

A: Given: The pressure of R134a, P1 = 100 psi The temperature of the R134a, T = 100⁰F The final…

Q: steam initially at 200 kPa and 3000C. The steam is now cooled while being stirred until its volume…

A: First Step is To Write The Given Data. And We need To Take Some data from Steam table So Please…

Q: Air at 17 oC is compressed steadily in an adiabatic compressor from 100 kPa to 680 kPa. If the…

A: Transfer of heat or mass between surrounding and system is called an adiabatic process. Given Data-…

Q: A rigid tank is divided into two equal parts by a partition. One part of the tank contains 2.5 kg of…

A: To find: The entropy change of water during the process. Given  The mass of compressed liquid m=2.5…

Q: Refrigerant-134a enters the compressor of a refrigeration system as saturated vapor at 0.14 MPa and…

A: The refrigerant enters the compressor as saturated vapor at The refrigerant leaves the compressor as…

Q: heating system has a volume of 20 Land is filled with superheated water vapor at 200 kPa and 150°C.…

A: Volume of water = 20 LWater vapour pressure P1 = 200kPaWater vapour temperature T1 = 150o CSteam…

Q: Air is compressed by a 40-kW compressor from P1 to P2. The air temperature is maintained constant at…

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Q: A 15-ft3 steel container that has a mass of 75 lbm when empty is filled with liquid water.…

A: To find-: The total entropy generated during the process ∆S. Given-: The volume of container is V=15…

Q: Water with mass of 9.7 kg is initially at 800 kPa with entropy of 7.957 kJ/kg. K. It then undergoes…

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Q: An insulated rigid tank is divided into two equal parts by a partition. Initially, one part contains…

A: Given data: N=14.5 kmolP1=330 kPaT1=50°C Need to determine the total entropy change during this…

Q: Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated…

A: At 140 Kpa ( Refrigerant-134a table) T=-18.77°C = 254.23K Heat rejected, Q=180 KJ TO=-10°C=263 K

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Q: Steam at 6 MPa and 800 oC is throttled in a valve to a pressure of 1 MPa during a steady-flow…

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Q: In a system, 2.5 kg of air at 350 0C expands isothermally behind a piston in a cylinder until the…

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.